Showing papers in "Chemical Communications in 2002"

TL;DR: In this article, a tantalum oxynitride, TaON, was used as a photocatalyst for oxidation of water into O2 with a sacrificial electron acceptor (Ag+).

TL;DR: An ionic liquid polymer gel containing 1-methyl-3-propylimidazolium iodide (MPII) and poly(vinylidenefluoride-cohexafluoropropylene) (PVDF-HFP) has been employed as quasi-solid state electrolyte in dye-sensitized nanocrystalline TiO2 solar cells with an overall conversion efficiency of 5.3% at AM 1.5 illumination as mentioned in this paper.

TL;DR: Glycerol is oxidised to glyceric acid with 100% selectivity using either 1% au/charcoal or 1% Au/graphite catalyst under mild reaction conditions.

TL;DR: A dye-sensitized solar cell fabricated using the room temperature molten salt, 1-hexyl-3-methylimidazolium iodide, iodine and a low molecular weight gelator as a quasisolid-state electrolyte showed a 5.0% light-to-electricity conversion efficiency under AM 1.5 irradiation, and high-temperature stability.

TL;DR: Supported Au catalysts are very selective for the direct formation of hydrogen peroxide from H2/O2 mixtures at 2 degrees C; the rate of H2O2 synthesis is markedly increased if Au-Pd alloy nanoparticles are generated by the addition of Pd.

TL;DR: In this article, the authors demonstrate that significant improvements in kinetics of co-crystal formation by grinding can be achieved by the addition of minor amounts of appropriate solvent, such as ethanol.

TL;DR: Hybrids of silver particles of 1 to 2 nm in size with highly branched amphiphilically modified polyethyleneimines adhere effectively to polar substrates providing environmentally friendly antimicrobial coatings.

TL;DR: In this paper, copolymerisation of ethene and alkylacrylates is catalysed by palladium modified with di(2-methoxyphenyl)phosphinobenzene-2-sulfonic acid (DOPPBS); a linear polymer is produced in which acrylate units are incorporated into the polyethylene backbone.

TL;DR: The first three-dimensional chromium(III) dicarboxylate compounds have been isolated and their structures solved from powder X-ray diffraction data; the flexible framework of these materials delimits large pores.

TL;DR: Chromium complexes of ligands of the type Ar2PN(Me)PAr2 (Ar = ortho-methoxy-substituted aryl group), on activation with MAO, are extremely active and selective catalysts for the trimerisation of ethylene.

TL;DR: High solubility of SWNTs and MWNTs in water is obtained by organic functionalisation; derivatisation with N-protected glycine is also easily achieved.

TL;DR: Molecules adsorbed on Pt nanoparticles prepared on Si by a chemical deposition technique exhibit extremely strong IR absorption, which enables fast time-resolved IR monitoring of electrocatalytic reactions.

TL;DR: AgInZn7S9 with a 2.3 eV band gap, which was a solid solution of AgInS2 and ZnS semiconductors, showed photocatalytic activity for H2 evolution from an aqueous solution containing sacrificial reagents SO3(2-) and S2- under visible light irradiation even without a Pt cocatalyst.

TL;DR: In this paper, the photochromic reactivity of diarylethenes in the single-crystalline phase was found to be controlled by the distance between the reactive carbon atoms in the antiparallel conformation.

TL;DR: The synthesis, spectroscopic characteristics and in vitro cellular uptake properties of a new class of therapeutic window photosensitiser, namely the BF2 chelates of 3,5-diaryl-1H-pyrrol-2-yl-3-5- diarylpyrrol 2-ylidene amines (tetra-arylazadipyrromethenes) are described with the aim of developing a novel class of photodynamic therapeutic agents.

TL;DR: A novel precursor, a mixture of B2O2 and Mg which is generated in situ by reacting B andMgO at 1300 degrees C, can be used to effectively synthesize bulk amounts of pure BN nanotubes with Mg evaporated from the final product.

TL;DR: The fluorescence, absorption and fluorescence quenching properties of an anionic poly(phenylene ethynylene) are investigated in H2O and MeOH solutions.

TL;DR: This article mainly deals with the recent serendipity of novel porphyrin analogs such as N-confused p Morphyrin, the unique property of this ligand that allows the formation of a variety of metal complexes.

TL;DR: A new method is proposed for the fabrication of a well-defined size and shape distribution of silver nanoparticles in solution using direct laser irradiation of an aqueous solution containing a silver salt and a surfactant in the absence of reducing agents.

TL;DR: A microfluidic procedure for the controlled production of cadmium sulfide nanoparticles is described in this article, where the authors also present a method for the extraction of the nanoparticles.

TL;DR: The concept of supported ionic liquid catalysis (silc) has successfully been applied to hydrogenation reactions, which significantly reduced the required amounts of ionic Liquid phase and enabled the usage of fixed-bed technology.

TL;DR: In this paper, a prebiotic route to sugars was proposed using cross-aldol reactions catalyzed by cyclic secondary amines in aqueous media, which may provide a direct route to a variety of aldols including carbohydrate derivatives.

TL;DR: In this article, the binding stoichiometry of a host-guest complex can be effectively controlled by the redox chemistry of the guest∶ a 1∶1 inclusion complex of methylviologen dication (MV2+) in cucurbit[8]uril (CB[8]), which converts completely and reversibly to a 2∶ 1 inclusion complex (mV+˙) in CB[8], upon the reduction of the host.

TL;DR: Recent advances that make it possible to add new building blocks to the genetic codes of both prokaryotic and eukaryotic organisms are described.

TL;DR: The use of in situ infrared, Raman, UV-VIS, electron paramagnetic resonance, nuclear magnetic resonance, X-ray absorption and Mössbauer spectroscopy; the construction of valuable spectroscopic-reaction cells and the possibilities and limitations to monitor real time catalytic events are reviewed.

TL;DR: Thermal treatment of Zn(NH3)(4)2+ precursor in ethanol solvent led to the formation of the tubular ZnO which exhibited strong ultraviolet photoluminescence around 385 nm at room temperature.

TL;DR: Ligand-stabilised, water-soluble gold nanoparticles of two different size ranges are readily prepared using monohydroxy (1-mercaptoundec-11-yl) tetraethylene glycol as a novel capping agent and it is expected that this new material will be useful for a number of bio-analytical applications.

TL;DR: The conformal growth of an overlayer of Al2O3 on a nanocrystalline TiO2 film is shown to result in a 4-fold retardation of interfacial charge recombination, and a 30% improvement in photovoltaic device efficiency.

TL;DR: A highly effective Cu-Ru catalyzed addition of terminal alkynes to imines via C-H activation has been achieved in water or under solvent-free conditions.

TL;DR: The room temperature ionic liquid, 1-butyl-3-methylimidazolium hexafluorophosphate, [C4mim][PF6] was found to be an efficient plasticizer for poly(methyl methacrylate), prepared by in situ radical polymerization in the ionicLiquid medium.